Intrusion molding process for forming composite structures

Details Intrusion molding process for forming composite structures Intrusion molding process for forming composite structures

1984-04-30

1985-12-24

Anderson, Philip

Plastic and nonmetallic article shaping or treating: processes

Vacuum treatment of work

To degas or prevent gas entrapment

264156, 264250, 264257, 264259, 264273, 264314, 264DIG6, 425129R, 425389, 425DIG14, 428 68, 428 76, 4283139, 428325, B29C 1708, B32B 516

Patent

active

045605238

ABSTRACT:
The invention is a method of forming a composite structure which begins with the formation of a syntactic foam core having internal communication passages that terminate with a plurality of openings in the outer surface of said core. After being wrapped with a plurality of layers of porous material, the wrapped core is positioned in a cavity of a mold having an inlet communicating with one of the openings. A source of uncured resin mix then is connected to the inlet and the mold is evacuated. After being forced through the inlet and the passages to fill the mold and impregnate said fibrous material, the resin mix is cured to provide with the core and the fibrous material a rigid composite structure.

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